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by itishappy
562 days ago
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Parenthesis are not really optional, they're just used differently than other languages. Other languages use parenthesis for function application and grouping, in Haskell it's just grouping. wordsPerLine = filter (>0) . map (length . words) . lines
Funnily enough, parenthesis are actually optional in Elixir, although it's a warning to use pipe syntax without them. The following is valid in both Haskell and Elixer: length [1,2,3]
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